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DS1511

Dallas Semiconducotr
Part Number DS1511
Manufacturer Dallas Semiconducotr
Description Y2K-Compliant Watchdog Real-Time Clocks
Published Sep 21, 2005
Detailed Description DS1501/DS1511 Y2K-Compliant Watchdog Real-Time Clocks www.maxim-ic.com GENERAL DESCRIPTION The DS1501/DS1511 are full-f...
Datasheet PDF File DS1511 PDF File

DS1511
DS1511

Overview
DS1501/DS1511 Y2K-Compliant Watchdog Real-Time Clocks www.
maxim-ic.
com GENERAL DESCRIPTION The DS1501/DS1511 are full-function, year 2000compliant real-time clock/calendars (RTCs) with an RTC alarm, watchdog timer, power-on reset, battery monitors, 256 bytes NV SRAM, and a 32.
768kHz output.
User access to all registers within the DS1501/DS1511 is accomplished with a byte-wide interface, as shown in Figure 8.
The RTC registers contain century, year, month, date, day, hours, minutes, and seconds data in 24-hour binary-coded decimal (BCD) format.
Corrections for day of month and leap year are made automatically.
FEATURES § BCD-Coded Century, Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap-Year Compensation Valid Up to the Year 2100 Programmable Watchdog Timer and RTC Alarm Century Register; Y2K-Compliant RTC +3.
3 or +5V Operation Precision Power-On Reset Power-Control Circuitry Support System PowerOn from Date/Day/Time Alarm or Key Closure/Modem-Detect Signal 256 Bytes Battery-Backed NV SRAM Auxiliary Battery Input Accuracy of DS1511 Better than ±1 Minute/Month at +25°C Day-of-Week/Date Alarm Register Crystal Select Bit Allow RTC to Operate with 6pF or 12.
6pF Crystal Battery Voltage-Level Indicator Flags Available as Chip (DS1501) or Stand-Alone Module with Embedded Battery and Crystal (DS1511) UL Recognized § § § § § § § § § § § § § APPLICATIONS Remote Systems Battery-Backed Systems Telecom Switches Office Equipment Consumer Electronics ORDERING INFORMATION PART DS1501YN DS1501YEN DS1501YSN DS1501WN DS1501WEN DS1501WSN DS1511Y DS1511W TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C 0°C to +70°C 0°C to +70°C PIN-PACKAGE 28 DIP (600 mil) 28 TSOP 28 SO (330 mil) 28 DIP (600 mil) 28 TSOP 28 SO (330 mil) 28 Module (720 mil) 28 Module (720 mil) PIN CONFIGURATION TOP VIEW Selector Guide appears at end of data sheet.
Typical Operating Circuits appears at end of data sheet.
PWR X1 X2 RST IRQ A...


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